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E39 (1997 - 2003) The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Hey guys I was trying to reset the oil service indicator and I did the Gage's test any way after I'm done this light came on and it doesn't want to go away

If the light in your pic came on...it's not because of the normal service indicator reset procedures that is performed by pressing the buttons on the instrument cluster.

What went wrong though, is questionable, because there isn't any indication if you may have done something different (operator error) or if there are other issues with your car.

First, that icon has NOTHING to do with the service display reset, nor does it have anything to do with any options on your car because that option was NEVER offered on e39 BMWs imported to the USA.

If there is something missing in the info you have listed, then you'll have to tell us or reveal it...again because the ACC option (active cruise control) was never offered here in the states on the e39. Perhaps a temporary battery nap (remove negative battery cable for approx 5 minutes) will get rid of this odd electrical gremlin. BTW, how old is your car battery and have you had any other odd electrical gremlins recently that might point to an electrical issue (like a dying battery)?